Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 28, Problem 2RQ
True or False? The diesel fuel’s antiknock quality is measured by the cetane rating.
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True or False? The diesel fuel’s antiknock quality ismeasured by the cetane rating
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fuel additive are being discussed. technician A says adding oxygenates to gasoline increases fuel economy. technician B says adding 10 percent ethanol to gasoline may boost the octane rating 2.5 to 3 points. who is correct?
Chapter 28 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 28 - Pump gasoline may contain a small amount of...Ch. 28 - True or False? The diesel fuels antiknock quality...Ch. 28 - What percentage of ethanol does E85 contain?Ch. 28 - List five advantages the use of piezoelectric...Ch. 28 - What does the Reid vapor pressure (RVP) test...Ch. 28 - List three alternative fuels for an internal...Ch. 28 - Why is the sulfur content in gasoline limited?Ch. 28 - Prob. 8RQCh. 28 - What is particulate matter and when is it...Ch. 28 - What are oxygenates and why are they added to...
Ch. 28 - How does SCR lower the content in a diesels...Ch. 28 - True or False? Piezoelectric materials can emit a...Ch. 28 - Name three driveability factors that are affected...Ch. 28 - Which of the following statements about hydrogen...Ch. 28 - Which of the following chemicals is commonly added...Ch. 28 - Technician A says that the use of methanol in...Ch. 28 - Technician A says that reformulated gasoline...Ch. 28 - Technician A says that dedicated vehicles are...Ch. 28 - Technician A says white smoke in the exhaust of a...Ch. 28 - Technician A says piezo material is a type of...Ch. 28 - Prob. 6ASRQCh. 28 - While discussing chemicals that are currently...Ch. 28 - While discussing common rail fuel injection...Ch. 28 - Technician A says diesel engines consume less fuel...Ch. 28 - While discussing the reasons why the use of E85...
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- How does SCR lower the content in a diesels exhaust?arrow_forwardWhich of the following chemicals is commonly added to gasoline to increase its octane rating? a. Isooctane b. Heptane c. Sulfur d. Ethanolarrow_forwardWhile discussing air-fuel ratios: Technician A says that a stoichiometric mixture is theoretically the best combination of fuel and air to provide for total combustion. Technician B says that a stoichiometric mixture always results in complete combustion. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
- True or False? In an HCCI engine, combustion immediately and simultaneously produces a steady flame across the mixture.arrow_forwardIC ENGINE - WHICH OF THE FOLLOWING IS NOT A GOOD PROPERTY OF FUEL ? 1. No emission of smoke 2. High ignition temprature 3. High calorific value 4. Smooth burningarrow_forwardThe octane number of a fuel is the percentage of octane in that fuel. True Falsearrow_forward
- Why were some fuels called unleaded? I. Lead used to be added to diesel to improve its octane rating II. Blends with minimal lead content replaced lead-heavy fuels. a. Both I and II b. I only c. Neither I nor II d. II onlyarrow_forwardtechnician A says lean ratio of 15:1 to 16:1 provide the best fuel economy. technician B says rich mixture have a ratio below 14.7:1 and provide more power from the engine but greater fuel combustion. who is correct?arrow_forwardTrue or False? In an HCCI engine, combustion immediatelyand simultaneously produces a steady flameacross the mixture.arrow_forward
- How does a GDI system provide for a stratified charge in the combustion chamber?arrow_forwardWhich of the following conditions can be revealed by fuel pressure readings? Faulty fuel pump Faulty fuel pressure regulator Restricted fuel delivery system All of the abovearrow_forwardAs an engines compression ratio increases, what should happen to the octane rating of the gasoline?arrow_forward
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